Your [2] is outdated information. 2018 my not seem like that long ago, but science doesn't stop. EX: https://academic.oup.com/sleep/article/44/2/zsaa173/59865

Your [2] is outdated information. 2018 my not seem like that long ago, but science doesn't stop. EX: https://academic.oup.com/sleep/article/44/2/zsaa173/5986548 https://academic.oup.com/sleep/article/44/2/zsaa173/5986548 However, growing evidence suggests that new cells are not only “born” constitutively in the adult hypothalamus, but many of these cells also differentiate into neurons and glia and serve specific functions.